Overworked mother Lisa (Anna Friel) finds herself drawn to glamorous Kate. But a chance encounter at a dinner party turns Lisa's world upside down and leads to a careless mistake.

Lisa tries to make amends for Lucinda's disappearance but is starting to see a different side to Kate and Guy. Roz accepts Scott's offer but is one night going to be enough?

With their daughter still missing, Kate and Guy become closer. Lisa confronts Adam. When Winston finds Roz's money, can he fight his old demons?

The school trip takes an unexpected turn when Lisa discovers the truth about Kate, and Roz walks into a dangerous situation.

Roz deals with the trauma of her attack, while Lisa tries to fix her marriage. With her daughter's return, Kate struggles to keep her web of lies in tact.

Kate refuses to lose her husband, Lisa struggles to find her way back to hers and Roz decides it's time to tell the truth.